Roadside Unit Bridging Incompatible V2X Protocols
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Solution Overview
Problem
Current vehicle-to-everything (V2X) communication technologies, such as CV2X and DSRC, operate on different standards and are not interoperable, limiting their ability to leverage input from each other and enhance intelligent transportation systems (ITS) applications.
Innovation Solution
A roadside unit (RSU) equipped with multiple transceivers and a processor that can communicate using various protocols, allowing for message translation and prioritization across different wireless technologies, enabling interoperability between CV2X, DSRC, Bluetooth, UWB, and LoRa, and facilitating efficient data exchange and congestion management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple incompatible V2X protocols are used for communication, then communication versatility is improved, but system complexity increases
Solution Approach 1:
The patent introduces a gateway device as an intermediary between incompatible V2X protocols. The gateway receives messages from one protocol (e.g., CV2X), translates them into another protocol (e.g., DSRC), and forwards them to the destination. This mediator approach enables communication between incompatible systems without requiring each device to support all protocols directly, thus improving versatility while managing complexity through centralized translation.
Solution Approach 2:
The gateway device is designed with multi-functionality to handle multiple V2X protocols simultaneously. It can receive, process, and transmit messages across different protocol standards (CV2X, DSRC, and others), making a single device capable of performing multiple communication functions. This universal design improves system adaptability while avoiding the need for separate dedicated devices for each protocol.
2Adaptability or versatility
If message translation between protocols is implemented, then interoperability is improved, but processing time increases
Solution Approach 1:
The gateway device performs preliminary actions by pre-establishing translation rules and message format mappings between different V2X protocols. Common message structures and translation patterns are pre-configured, allowing the gateway to quickly translate messages without performing complex real-time analysis. This preliminary preparation reduces processing time while maintaining accurate interoperability between protocols.
3Reliability
If message prioritization is implemented for different roadway participants, then safety is improved, but system complexity increases
Solution Approach 1:
The patent applies local quality by assigning different priority levels to messages based on the specific roadway participant and message type. Instead of a uniform processing approach, the system evaluates each message's context (e.g., pedestrian crossing, vehicle collision risk, traffic signal status) and applies appropriate priority handling locally. This targeted prioritization improves safety for critical messages while avoiding unnecessary complexity for routine communications.
Data Source
AI summary
A road-side unit includes a first transceiver configured to communicate using a first vehicle-to-infrastructure protocol and a second transceiver configured to communicate using a second vehicle-to-infrastructure protocol, the first vehicle-to-infrastructure protocol and the second vehicle-to-infrastructure protocol being incompatible with one another. The road-side unit further includes a processor programmed to monitor transmissions from the first and second transceivers, receive an incoming message sent to the processor from the first transceiver, the incoming message being designated for distribution to roadway participants, identify based on the monitored transmissions whether the second transceiver is in communication with devices of roadway participants available to receive outgoing messages, and if so, construct an outgoing message based on the incoming message and send the outgoing message via the second transceiver.